Compilare: user.cpp: In function ‘int main()’: user.cpp:22:20: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[1605]’ [-Wformat=] scanf("%s" , &s); ^ user.cpp:40:24: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] f[l + 1] = NULL; ^~~~ user.cpp:50:24: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] f[l + 1] = NULL; ^~~~ user.cpp:63:24: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] f[l + 1] = NULL; ^~~~ user.cpp:77:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0 ; i < v.size() ; i ++) ~~^~~~~~~~~~ user.cpp:93:32: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] a[m][lungime[m]] = NULL; ^~~~ user.cpp:19:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dir.in" , "r" , stdin); ^ user.cpp:20:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dir.out" , "w" , stdout); ^ user.cpp:22:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s" , &s); ^